
// 
 const hexDigits = "0123456789abcdef";

/**
 * encode
 * @param  {String} src Encode string input
 * @return {String} Encoded string
 */
export default function () {
    var s = [];
    for (var i = 0; i < 36; i++) {
        s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
    }
    s[14] = "4";  // bits 12-15 of the time_hi_and_version field to 0010
    s[19] = hexDigits.substr((s[19] & 0x3) | 0x8, 1);  // bits 6-7 of the clock_seq_hi_and_reserved to 01
    s[8] = s[13] = s[18] = s[23] = "-";
 
    var uuid = s.join("").replace(/-/g,'');
    return uuid;
};